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United States Patent | 5,077,695 |
Khuri-Yakub ,   et al. | December 31, 1991 |
An acoustic microscope in which acoustic energy is focused onto a membrane which includes an aperture which is a fraction of the size of the focal spot of the acoustic beam at the membrane to form fringing fields on the other side of the membrane. Acoustic energy reflected from the membrane is detected. An object to be examined is placed in cooperative relationship with the fringing fields.
Inventors: | Khuri-Yakub; Butrus T. (Santa Clara County, CA); Reinholdtsen, Paul A. (Seattle, WA) |
Assignee: | Board of Trustees of the Leland Stanford Junior University (Stanford, CA) |
Appl. No.: | 434236 |
Filed: | November 13, 1989 |
Current U.S. Class: | 367/7; 73/642; 367/138 |
Intern'l Class: | G03B 042/06 |
Field of Search: | 367/7,138 73/642,606 128/663.01 |
4818110 | Apr., 1989 | Davidson | 356/358. |